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See Technical Specifications

PCF8574PW +BOM

8-bit 2.5- to 5.5-V I2C/SMBus I/O expander with interrupt

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

PCF8574PW
Datasheet:

PCF8574PW Datasheet (PDF)
Programmable:

Not Verified
Number Of I/O:

8
Interface:

I²C
Interrupt Output:

Yes
EDA/CAD Models:

Request Free CAD Models for PCF8574PW

PCF8574PW Information

Description

The Texas Instruments PCF8574PW is an I2C bus interface, an 8-bit programmable I/O expander that can be configured as inputs or outputs. It operates at a voltage range of 2.5V to 5.5V and sinks/sources up to 25mA per I/O pin. This versatile device offers flexible I/O expansion for industrial automation, home automation, consumer electronics, automotive applications, and controlling various peripherals like switches, relays, LEDs, LCDs, in embedded systems.

Features

The PCF8574PW features include:

I2C bus interface
8-bit programmable I/O ports with sink/source capability
Operates at 2.5V to 5.5V
Configurable as inputs or outputs
Sinks/source up to 25mA per I/O pin
Flexible I/O expansion for industrial automation, home automation, consumer electronics, and automotive applications

It is commonly used in controlling various peripherals like switches, relays, LEDs, LCDs, and more in embedded systems.

Package

The package type of PCF8574PW is Small Outline Packages - PW (R-PDSO-G20).

Pinout

According to the product information, the PCF8574PW has a package type of Small Outline Packages - PW (R-PDSO-G20), which indicates that it has 20 pins. As for its function, the PCF8574PW is an I/O expander with 8-bit programmable I/O ports. It can be configured as inputs or outputs and operates at 2.5V to 5.5V with sink/source capability up to 25mA per I/O pin.

Manufacturer

The manufacturer of the PCF8574PW is Texas Instruments (TI). Texas Instruments is a multinational semiconductor company that designs, manufactures, and tests semiconductors and other electronic components. The company was founded in 1930 and is headquartered in Dallas, Texas, USA. TI is one of the largest and most well-known semiconductor companies in the world, with a wide range of products including microprocessors, memory chips, and analog ICs.

Applications

According to the product information, the application areas of PCF8574PW include:

Industrial automation
Home automation
Consumer electronics
Automotive applications
Controlling various peripherals like switches, relays, LEDs, LCDs, and more in embedded systems

Equivalent

The equivalent products of PCF8574PW are:

NXP PCA8574
Microchip MCP23017
STMicroelectronics M24C64

These I2C bus interface ICs offer similar functionality, including 8-bit programmable I/O ports and sink/source capability.

Specifications

Category	Integrated Circuits (ICs)InterfaceI/O Expanders	Series	-
Programmable	Not Verified	Number of I/O	8
Interface	I²C	Interrupt Output	Yes
Features	POR	Output Type	Push-Pull
Current - Output Source/Sink	1mA, 25mA	Clock Frequency	100 kHz
Voltage - Supply	2.5V ~ 6V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	PCF8574
Package/Case	TSSOP20